Ohio Observatories Apollo Observatory Observatory for the Miami Valley Astronomical Society Asteria Observatory Private Observatory Astronomy Club of Akron Observatory Observatory for the Astronomy Club of Akron BGSU Observatory Observatory for Bowling Green State University Ballreich Observatory Observatory for the Sandusky Valley Amateur Astronomy Club Burrell Memorial Observatory Observatory for Baldwin Wallace University Cincinnati Observatory Public Observatory Clarke Astronomical Observatory Observatory for the University of Mount Union Cobblestone Creek Observatory Private Observatory Cuyahoga Astronomical Association Observatory Observatory for the Cuyahoga Astronomical Association Elias Loomis Observatory Observatory for Western Reserve Academy Fairlawn Rotary Observatory Observatory for the Summit County Astronomical Society Franklin Miller Observatory Observatory for Kenyon College Fred Bay Observatory Observatory for the Warren County Astronomical Society Freedlander Park Observatory Observatory for the Wayne County Astronomical Society Frost Observatory Observatory for Western Reserve Academy Harrold's Observatory Private Observatory Helen and Elgin Brooks Observatory Observatory for the University of Toledo Henkel Observatory Observatory for the Cincinnati Astronomical Society Indian Hill Dome Observatory Observatory for the Chagrin Valley Astronomical Society Indian Hill Main Observatory Observatory for the Chagrin Valley Astronomical Society Indian Hill North Observatory Observatory for the Chagrin Valley Astronomical Society John Bryan State Park Observatory Observatory for the Miami Valley Astronomical Society John D. Nielson Observatory Observatory for the Black River Astronomical Society Junior Observatory Observatory for the Miami Valley Astronomical Society KSU/NASA Observatory Observatory for Kent State University Kilbourne Observatory Private Observatory Lewis Observatory Observatory for the Zanesville Astronomy Club Mahoning Valley Cortese Observatory Observatory for the Mahoning Valley Astronomical Society Nassau Astronomical Station Observatory Observatory for the Chagrin Valley Astronomical Society Oberle Observatory Observatory for the Cuyahoga County Astronomical Society Ohio Northern University Astronomy Observatory Observatory for Ohio Northern University Ohio University Observatory Observatory for Ohio University Perkins Observatory Observatory for Ohio Wesleyan University Peters Hall Observatory Observatory for Oberlin College Rachel A. Hutzel Observatory Observatory for Camp Joy and the Warren County Astronomical Society Ralph Mueller Observatory Observatory for the Cleveland Museum of Natural History Ritter Observatory Observatory for the University of Toledo Schoonover Observatory Observatory for the Lima Astronomical Society Sidney Frohman Observatory Observatory for Sandusky High School Stephens Memorial Observatory Historic Observatory for Hiram College Student Observatory Observatory for Ohio Wesleyan University Swasey Observatory Observatory for Denison University Thomas W. Mastin Observatory Observatory for Andrews Osborne Academy Wadsworth Observatory Private Observatory Warner & Swasey Observatory Observatory for Case Western Reserve University Warren Rupp Observatory Observatory for the Richland Astronomical Society Weaver Observatory Observatory for Wittenberg University Weitkamp Observatory Observatory for Otterbein University Wilderness Center Observatory Observatory for the Wilderness Center William Chamberlain Gurley Observatory Observatory for Marietta College Winding Hill Observatory Observatory for the Northern Ohio Valley Astronomy Educators Astronomy Club Wooster Observatory Observatory for the College of Wooster Zeppy's Astronomical Observatory Private Observatory